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In we ar: 77mm m'inesses;

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UNITED STATES PATENT OFFICE.

WILLIAM RICHARDSON, OF MILWVAUKEE, WISCONSIN, ASSIGNOR TO THE MILWAUKEE DUST OOLLEOTOR MANUFAGTURING COMPANY, OF SAME PLACE.

DUST-COLLECTO R.

v SPECIFICATION forming part of Letters Patent No. 343,400, dated June 8, 1886. Application filed February 27, 1885. Serial No. 157,175. (No model.)

To all whom it neay concern.-

Be it known that 1, WILLIAM RICHARDSON, of Milwaukee, in the county of Milwaukee and in the State of Wisconsin, have inventedcertain new and useful Improvements in Dust- Collectors; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to dust-collectors, and will be fully described hereinafter.

The drawing represents an end view of a dust-collector embodying my invention.

This invention is designed as an improvement on the well-known Prinz dust-collector, in which there is a sectional revolving balloon operated intermittently, and a fan exhausting through it, aswell as a knocker for dislodging the dust from each section successively.

A is the balloon; B, is what is called the back-draft tube, and a a a a are sections of the balloon.

G is a knocker, the handle of which is secured to a shaft, C, that extends through they machine under the balloon and parallel with it, and the outer end of this shaft 0 has keyed onto it a lever, c, thatlies at an acute angle to the handle of the knocker O.

D is a casting that lies up'against the housing A of the collector, and is secured thereto by bolts (1 that pass through slots (1 to receive suitable nuts, the shaft 0 also passing through the casting.

D is a housing that is formed on the upper portion of the casting to receive a spring, D and D is a perforated lug on the lower face of the casting D to receive a plunger, E, which has fixed on it collar f, that is separated from the lug D by a spring, F. This upper end of the plunger E is rounded and fits in a cavity in the under side of lever c, and as this plunger E is held up by spring F acting on its collar it clamps theleverc tightly up against the spring D. This lever c has a re-enforce, c, on the upper face of its lower end to receive a like re-enforced face of an arm, 9, on the conveyer-shaft g, which arm 9, at every revolution of the conveyer-shaft, strikes lever c, and by depressing its lower end partly revolves the shaft 0 against the force of spring F, correspondinglydepressing the knocker C, and as the arm g clears the lever c the spring F will suddenly throw lever a up again and cause the knocker to strike the section immediately above it, after which the knocker will Having thus described my invention, what- I claimas new, and desire to secure by Letters Patent, is

1. In a dust-collector, the shaft 0', provided with the knocker and arm a, means for operating the same, the casting,and the spring-controlled plunger, in combination, as set forth.

2. The casting D, the plunger and springs, in combination with the knocker and its shaft, lever c, and the arm 9 and its shaft, as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wiscousin, in the presence of two witnesses.

. WILLIAM RICHARDSON. WVitnesses:

S. S. STOUT, H. G. UNDERWOOD. 

